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xfs: simplify inode to transaction joining

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Currently we need to either call IHOLD or xfs_trans_ihold on an inode when
joining it to a transaction via xfs_trans_ijoin.

This patches instead makes xfs_trans_ijoin usable on it's own by doing
an implicity xfs_trans_ihold, which also allows us to drop the third
argument.  For the case where we want to hold a reference on the inode
a xfs_trans_ijoin_ref wrapper is added which does the IHOLD and marks
the inode for needing an xfs_iput.  In addition to the cleaner interface
to the caller this also simplifies the implementation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Christoph Hellwig
2010-06-24 11:36:58 +10:00
committed by Alex Elder
parent 4d16e9246f
commit 898621d5a7
19 changed files with 103 additions and 247 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
fs/xfs/xfs_vnodeops.c
View File

@@ -268,8 +268,7 @@ xfs_setattr(
commit_flags = XFS_TRANS_RELEASE_LOG_RES;
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, lock_flags);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
/*
* Only change the c/mtime if we are changing the size
@@ -319,8 +318,7 @@ xfs_setattr(
xfs_iflags_set(ip, XFS_ITRUNCATED);
}
} else if (tp) {
xfs_trans_ijoin(tp, ip, lock_flags);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
}
/*
@@ -653,10 +651,7 @@ xfs_free_eofblocks(
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip,
XFS_IOLOCK_EXCL |
XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
error = xfs_itruncate_finish(&tp, ip,
ip->i_size,
@@ -728,8 +723,7 @@ xfs_inactive_symlink_rmt(
xfs_ilock(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
size = (int)ip->i_d.di_size;
ip->i_d.di_size = 0;
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
/*
* Find the block(s) so we can inval and unmap them.
@@ -773,8 +767,7 @@ xfs_inactive_symlink_rmt(
* Mark it dirty so it will be logged and moved forward in the log as
* part of every commit.
*/
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
/*
* Get a new, empty transaction to return to our caller.
@@ -907,8 +900,7 @@ xfs_inactive_attrs(
goto error_cancel;
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
xfs_idestroy_fork(ip, XFS_ATTR_FORK);
ASSERT(ip->i_d.di_anextents == 0);
@@ -1095,8 +1087,7 @@ xfs_inactive(
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
/*
* normally, we have to run xfs_itruncate_finish sync.
@@ -1129,8 +1120,7 @@ xfs_inactive(
return VN_INACTIVE_CACHE;
}
xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
} else {
error = xfs_trans_reserve(tp, 0,
XFS_IFREE_LOG_RES(mp),
@@ -1143,8 +1133,7 @@ xfs_inactive(
}
xfs_ilock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
}
/*
@@ -1392,8 +1381,7 @@ xfs_create(
* the transaction cancel unlocking dp so don't do it explicitly in the
* error path.
*/
IHOLD(dp);
xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL);
xfs_trans_ijoin_ref(tp, dp, XFS_ILOCK_EXCL);
unlock_dp_on_error = B_FALSE;
error = xfs_dir_createname(tp, dp, name, ip->i_ino,
@@ -1730,15 +1718,8 @@ xfs_remove(
xfs_lock_two_inodes(dp, ip, XFS_ILOCK_EXCL);
/*
* At this point, we've gotten both the directory and the entry
* inodes locked.
*/
IHOLD(ip);
xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL);
IHOLD(dp);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin_ref(tp, dp, XFS_ILOCK_EXCL);
xfs_trans_ijoin_ref(tp, ip, XFS_ILOCK_EXCL);
/*
* If we're removing a directory perform some additional validation.
@@ -1884,15 +1865,8 @@ xfs_link(
xfs_lock_two_inodes(sip, tdp, XFS_ILOCK_EXCL);
/*
* Increment vnode ref counts since xfs_trans_commit &
* xfs_trans_cancel will both unlock the inodes and
* decrement the associated ref counts.
*/
IHOLD(sip);
IHOLD(tdp);
xfs_trans_ijoin(tp, sip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, tdp, XFS_ILOCK_EXCL);
xfs_trans_ijoin_ref(tp, sip, XFS_ILOCK_EXCL);
xfs_trans_ijoin_ref(tp, tdp, XFS_ILOCK_EXCL);
/*
* If the source has too many links, we can't make any more to it.
@@ -2087,8 +2061,7 @@ xfs_symlink(
* transaction cancel unlocking dp so don't do it explicitly in the
* error path.
*/
IHOLD(dp);
xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL);
xfs_trans_ijoin_ref(tp, dp, XFS_ILOCK_EXCL);
unlock_dp_on_error = B_FALSE;
/*
@@ -2227,13 +2200,12 @@ xfs_set_dmattrs(
return error;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin_ref(tp, ip, XFS_ILOCK_EXCL);
ip->i_d.di_dmevmask = evmask;
ip->i_d.di_dmstate = state;
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
IHOLD(ip);
error = xfs_trans_commit(tp, 0);
return error;
@@ -2366,8 +2338,7 @@ xfs_alloc_file_space(
if (error)
goto error1;
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
/*
* Issue the xfs_bmapi() call to allocate the blocks
@@ -2668,8 +2639,7 @@ xfs_free_file_space(
if (error)
goto error1;
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
/*
* issue the bunmapi() call to free the blocks
@@ -2839,8 +2809,7 @@ xfs_change_file_space(
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
if ((attr_flags & XFS_ATTR_DMI) == 0) {
ip->i_d.di_mode &= ~S_ISUID;